DTC B2488: ECU internal error: Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

Check whether the diagnostic trouble code is stored again

Clear all the DTC stored in the power liftgate control unit.
Operate the power liftgate.
Check whether a DTC is stored in the power liftgate control unit.

Q: Is the DTC stored?

YES: Replace the power liftgate control unit.
NO: Intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).